Articles covered in this issue:
An optimization of the Chemical Process Route to Alkali Blue (Aniline Blue)
– Dr. Manfred Haehnke, Germany
Alkali Blue (Aniline Blue) and its higher sulfonated derivates have applications in many industries. The established production processes of this dye suffer a number of limitations. This article elaborates on an optimized manufacturing process, generating remarkable cost savings for commercial scale production of alkali blue.
Bio-based routes for succinic acid
Anirudh Raghavan, Thadomal Shahani Engineering College.
This article reviews the prospects and potential of bio-based succinic acid. It covers bio-based routes including the challenges involved in bio-processes as well as its myriad derivatives making it an important platform chemical. This article also includes a summary of the commercial developments till date in the bio-based processing routes for succinic acid.
Surge Detection and Surge Control Systems for Centrifugal Compressors – Part 2
Neetin Ghaisas, Fluor, Todd Reitsma, Compressor Control Corporation
Surge detection and surge control of centrifugal compressors is complex and requires specialized knowledge. This article describes performance over-ride control, limiting loops and fallback modes, recycle piping and valve sizing considerations, hot gas bypass valve (HGBV) requirements and instrumentation considerations.
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